Automated Traffic Signal Performance Measures: Management, Operation, and Maintenance (2026)
Chapter: Appendix C: Case Example Interview Questionnaire
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Appendix B: Survey Responses
APPENDIX C
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Appendix D: Additional Resources
Suggested Citation:
"Appendix C: Case Example Interview Questionnaire." National Academies of Sciences, Engineering, and Medicine. 2026. Automated Traffic Signal Performance Measures: Management, Operation, and Maintenance. Washington, DC: The National Academies Press.
doi: 10.17226/29326.
APPENDIX C
Case Example Interview Questionnaire
Section 1: Operational Environment
- How would you describe your agencyʼs traffic signal environment?
- Is it urban, suburban, or rural?
- Does it consist mainly of grid networks, corridors, or isolated intersections?
- Is the system primarily unimodal or multimodal?
- How does your agency demonstrate leadership in traffic signal operations and management?
Section 2: Traffic Signal Management Program
- How does your agency determine operational goals and strategies for traffic signal management?
- Does your agency have clearly defined procedures for using automated traffic signal performance measures (ATSPMs) to achieve these goals and objectives?
Section 3: ATSPM Deployment and Use Cases
- Can you describe the process of ATSPM deployment, including who initiated the conversations, helped secure funding, and how the decision-making process unfolded?
5.1 Can you provide more details on funding?
- What steps were taken (if any) to develop and train your workforce on ATSPMs?
- What were the most significant challenges your agency faced during ATSPM deployment?
- What obstacles are currently hindering the effective use of ATSPMs? Challenges and issues associated with the transition from traditional reactive traffic signal timing to active approaches using tools like ATSPMs.
- Can you describe the system integration process for ATSPMs (e.g., central system, vendor product, cloud service, SPM-specific service, or consultant support)?
- How does your agency use ATSPMs for day-to-day signal operations and maintenance? For example, full-scale optimization, fine-tuning, getting TMCs, maintenance/troubleshooting.
10.1 Do you use Watchdog Alerts?
- What are the most common applications of ATSPMs in your agency?
11.1 Do you use ATSPMs for full-scale signal optimization or for fine-tuning?
- Do you currently use any system-level dashboards/visualization tools to help with decision-making?
12.1 Did you conduct benefit/cost analysis; are there any results that you would like to share?
- Data storage and retention policy?
- Any security challenges during ATSPM implementation/upgrades?
Suggested Citation:
"Appendix C: Case Example Interview Questionnaire." National Academies of Sciences, Engineering, and Medicine. 2026. Automated Traffic Signal Performance Measures: Management, Operation, and Maintenance. Washington, DC: The National Academies Press.
doi: 10.17226/29326.
Section 4: Future Steps in Application and Use of ATSPMs
- What are the immediate goals you hope to achieve with ATSPMs in the near future?
- What other performance metrics would you like to see with future ATSPM applications?
- Is there a desire to integrate emerging technologies within your ATSPM system, such as connected vehicle (CV) or autonomous vehicle (AV) data, AI-based products (e.g., smart cameras), or enhanced transit signal priority (TSP)?
17.1 What technologies are currently adopted, how and for what purposes they use them, training, maintenance and upgrading, staff requirement, cost, etc.
Section 5: Closing
- What lessons would they like to learn from other statesʼ practices regarding ATSPMs?
- What are the lessons they learned from ATSPM deployment?
Suggested Citation:
"Appendix C: Case Example Interview Questionnaire." National Academies of Sciences, Engineering, and Medicine. 2026. Automated Traffic Signal Performance Measures: Management, Operation, and Maintenance. Washington, DC: The National Academies Press.
doi: 10.17226/29326.
Suggested Citation:
"Appendix C: Case Example Interview Questionnaire." National Academies of Sciences, Engineering, and Medicine. 2026. Automated Traffic Signal Performance Measures: Management, Operation, and Maintenance. Washington, DC: The National Academies Press.
doi: 10.17226/29326.
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